Interfolding machine



NOV- 17, I

, W. H. CANNARD ET AL INTERFOLDING MACHINE 3 Sheets-Shee 1 Filed Aug 16, 1924' Qwwzntow w. H. CANNARD ET AL INTERFOLDING MACHINE Filed Aug. 16, 1924 3 Sheets-Sheet 2 the other drum.

Patented Nov. 17, 1925.

1] UNITED STATES v 1, 6 ,901, PATENT orF1cs..-;.

wrLLrAM E. oannann AND cream A. SHAFFER', or REEN mm, wmom,"

. I ASSIGNORS T0 SAID GANNARD.

mrnnronmno macismn.

Application filed August 1c, 1924.- serial-no. 732,422.

3 residing at 130 So. Roosevelt Street, Green Bay, lVisconsin, and Green Bay, lVisconsin,

respectively, in the county of Brown and State of Wisconsin, have invented certain new and useful Improvements in Interfolding Machines, of which the following is a speciiica 01i, reference being had therein to the accompanying drawing.

This invention relates to interfolding machines and, particularly, to that type thereof known in the art as rotary interfolders.

The present inventive-concept is, generally speaking, of the same type of machine as isdisclosed in ourearlier pending application, filed September 29, 1921, Serial No. 504,023, and involves certain (but not all) of the features of the structure of that case: For instance, in the earlier machine, there are two companion drums intergeared {or their-definite relative rotation to position tucker-bars on one drum successively "in coative relation to pairs of pinch-mem bers on the other drum, these tuckerand pinch-members, on each drum, being in alternate arrangement; there also being means for rotating the drums, and means for actuating the pinch-members. The

-pinch membors, and means for controlling the movement of the tucker members, in

that structure, are in the form ofrolls which are continuously rotated on their axes during the rotation of the drums these rolls being rotated by means which also are com-v mon to the tucker-members and whereby, while the pinch-members are being rotated, the tucker members also are thereby rotated in order that the active portions or" the tuckers on one drum may always have a definite and unchang ng relation to the axis of the other drum, thus insuring accurate registering of the active portion of each tucker on one drum between its'respective and coative pair of pinch rolls on In the structure I of our present machine, l'iowev-er, the pinch-members are not continumsly rotatable but have only a partial rotationa sort of rocking on their axesand the means for actuating :the pinch-members is independent of, and (of a type diiierent from, that of the earlier machine. As a consequence, the mode of o eration of the two machines is, m certain aspects, different and the results produced thereby are, likewise, somewhat different. For certain urposes, the present construct-ion may be ound to have certain practical advantages and, especially, asthe squeezin action of the pinch-mom rs may be found to be more pronounced and certain. However that may be, the present embodiment is a development of ourjoriginal conception and, so far as w arers present advised, is'novel and-a departure from ceitainifundamental principles of the earlier machine. 7 1

The object- 'of this type of machine is to effect an interfolding of two or more or sheets of paper, or the like, for "articles such as towels, toilet-paper, etc.,'and to effect such interfolding with great speed,

whereby the capacity of the machine, in

adays run for instance, is exceedingly large and substantially profitable. In a practical working of our earlier machine, the daily production thereof far exceeded the capacity of any other type of interfolding machine known to us. a This was due to the nicety of timed action of the parts of that machine, the coaction of certain" of such parts, on the one revolving drum with those on the other, the certai-nty,-always, of such coaction and the consequent high'speed at which the machine could normally be operated. that respect, the characteristic advantages. of that machine are present in the present machine and, perhaps, to a. gerater degree. 5 1 In order that the invention may be more readily ascertained, we ave disclosed it, as" apractical embodiment, in the accompany; ing drawings; but it is tojbe-unders that these drawings are, and are intended to be, merely illustrative, that our inventive,

concept-is susceptible of other embodiments modification and variation without departing' from the spirit of our 1nvention'or sacri-- ficing any of the underlying principles or' salient features thereof. In these drawings; 1 1 I Figure 1 is a fragmentary view, more on less diagrammatic, of intergeared drums;-

feach. carrying sets tuckejumembcrs m-ialtermte."arrangement,-=

,.;.-,;,y and showing one tucker-member on one drum in coacting, tucking relation to a'pair of pinch-members on the other drum, and

whereby sheets of materialpaper in this instance are interfolded and released durin the rotation of thedrums; means also being shown forsupplying twocut, associ- ,ated sheets;

- Fig. 2 is a view, in sectional elevation, and

on a much larger scale, of the drums with the pinch and tucker members, and showing the means for respectively actuating and. controlling. these members;

Fig. 3 is a view in -front elevation, partly in section, of one of the drums, and showing the marines of supporting and journalling itjin the machine frame, the instrumentalitie s for actuating the pinchmcmbers, and those for controlling the tucker members;

Fig. 4 is a fragmentary view, in end elevation, showing the intergearing of the drums,

the driving means therefor, etc.

5 is a similar view, 1n sectional ole-- ration, of a pair of pinch members, the pinvions by which they are intergeared, and a crank-arm carried by one of the pinions and by which the latter are actuated; and

-Fig. 6 is a detached view, in end elevation.-

of the pinion-and its attached crank-arm,

Referring to the drawings, the referencecharacter ,1 designates, generally, the ma-. chine-frame or drum-support, and 2 and 3 rotatable interacting drums, carriers or frames journaled therein. These drums may be of any required .dimensionsboth longitudinal and dia'metrtrl-and of any suitable material. I

These drums carry intermeshing gears 4 and 5, with one'of which meshes a drivegear 6 which, inturn. is driven from any required'sourcc of power and which, in the N presentinstance, may be regarded as the prime-mover of the drums to effect their rotation and the resultant action and coaction of mechanisms now to be described.

EXtending centrallv of the drums are htationarvshafts'? and 8. respectively, which carry b ll-bearings 9,.these being encompassed by the drive-nears, as shown in Fig. 3, and which bea ings facilitate-the rotation of the drums. The extremities of the shafts .are' reduced to present flat-lsurfaces 10 that -'extend throngh'elongated slots in the bosses required relative-and functioning positions.

n, 12 outstanding from the walls of the drumsupport land constitute means for preventing turning of the shafts. Threaded through each boss isan adjusting-screw 13 hearing. against the end of its respective shaft, and by which that shaft may be.

shifted toward the shaft of its companion drum in order that the drums, themselves, may beadjusted relatively 'to insure their Pinch-instrumcntalitiee.-Suitably jourhalled in the heads let, 15 ofeach drum is :1

plurality of setsof pinch-members, interfolders, or vice-instrumentalities 16, there preferably being a pair of these to a set. In this instance, there are three sets of these pinch-members shown; but the number may e increased or decreased, if desired or necessary for any reason. Each of these members is here shown as a round roll or rod; but it is understood that any other appropriate form may be utilized. One of the companion members mounts in its periphery a pmch-element or bar 17 which, by reeson'of the associated springs, (or equivalent rubber cushions) 18 and screws 19, has a controlled yielding action. The companion pinch-member likewise carries a pinchbar or element 20 but this preferably is stationary. These two pinch-elements operate to enga e the sheets during a rotative movement 0 the pinch members and constitute releasing means for eifecting separation of the interrolded sheets from the pinch-members when the drums have rotated such a distance that the tucker and pinch members have been. removed from a coacting position.

Preferably and as shown, each set of the pinch-members is adapted to be oscillated rotatively but only for a partial revolution. To that end, means are provided to-produce the required oscillatory movement; and, in this instance, such means comprise toothed elements-in this instance mutilated pinions 21 and 22 intermeshing so that the one derives-its action from the other. Secured to the pinion 21 is a crank-arm 23 (Figs. 2, 3 and 5) carrying a roller 24. These instrumentalities constitute one-a movable-component of a mechanism for effecting the oscillatory movement of the pinch-members.

and, therethrough, partial rotative move: 'ment of the companion pinch'member 16..

By the clockwise and counter-clockwise movement of the companion pinch-members and bythe coactionsof the aforementionedpinch-bars, a squeezing action is effected thereby and for a purpose presently to be explained. The cam groove includes an elongated-circular path or section 27, and two angular sections 28 and 29, the section 28 extending downward from the center line 30 which is in the plane of the horizontal axes of the drums and, then, at an approximate right angle (at 31) merging into the section a fixed relation to the axis'of the drum, so I 29 which, in turn, leads into the section 27.

lt is to be understood that, as the roller 24 on the crank-arm on any of the sets of the pinch-members approaches the aforementioned center-line 30, the members will be in an open position, so to speak. How- -ever, asthe roller continues its travel in the .cam groove and reaches the angular section 28, the latter (by reason of its straight-away form) becomes active on the crank arm to turn the mutilated gears an d, thereby, the pinch-members, and this operation closes the pinch-elements and causes them yieldingly to grasp and squeeze the paper tucked land. foldedin between them, effecting more or less of a 'crease'at the fold. While thus held between the pinch-members, the folded sheets are carried downwardly untilthe roller enters the groove-section 29 whereupon, by reason of its form,,thissection effects action on theroller to open the pinchelements and release the folded sheets, as

"shown iri Fig. 1, for instance; and, then,

' they are handled by a conveyor, in the manner (for example) explainedin our aforementioned application, Serial No. 504,023;

Manifestly, each set of pinch-members functions in the manner described; first, those on the one drum and, then, those on the other, alternatively, whereby, the folding of a plurality of sheets, and then, the interfolding of a series thereof, are effected.

Tucker instrumentaZitiesu+Preferably and as shown, means are provided for efi'ectingin timed relation to the opening and closing of the pinch-instrumentalities, as just described-.-'-th e tucking or pushing of the sheets of paper, or the like, between the pinch- 'members while they arein their open p0 sition, that is, when a set of these is at the center-line 30: In this instance, these means ment with the sets of pinch-members thereon. Each of these tuckers is journaledin the heads 14 and 15 of the drum and, at one end,.carries a pinion 33located to mesh with an idler-gear 34 supported on the head '15, and turning in a ball-bearing 35 (Fig. 3)

' The idler, in turn, meshes with a toothed section or shaft-pinion 36 on the drum-shaft 8. It willbe obvious that, asthe drum turns on its axis (the shaft 8), its toothed section 36,

being stationary, sets theidlers in ,ngotion and these, in turn, actuate" the tucker-pinions and the tuckers. The diameterof the several tucker-pinions, tl1e-'teeth thereon, and their pitch, are the same as those of the shaft-pinion 36; hence the speed of'rotation of those pinions is identical with that of-the drum. In other words, the rotation of the tucker-s is so synchronized with respect to that of thedru'm 'as'tocausewthe 'tuclcers,

.alwairsbin e91 them l't lfh mii tai alr include a series of tucker-members 32 mounted 1n each drum 1n alternatearrangethat, while they rotate on their own axes during the rotation of the drum by which they are carried; nevertheless, their position with respect to the drums axis is relatively stationary. As a consequence, they constantly occupy a fixed relation to the center-line 30 connecting the horizontal axes of the two drums. The result is that, when any particular tucker isapproaching that line, and, thus, about to assume a position to register with and tuck between the pinchelements, as well as when it is actually at the registering position, and for all stages thereafter, the tucker is projecting in a direction exactly parallel to the plane of the centerline. Therefore, it's registration with the pinch-instrumentalities, and its'tucking action, are effected easily, accurately, and without any undesirable friction or drag, on

vthe surfaces of the pinch-instrumentalitics.

In consequence, it functions .to push or tuck the associated sheets between the pinbh members and withdraws without pulling'fhf disturbing the sheets, leaving thesebetween the pinch-elements to be folded and creased by the combined rolling and pressing action efiected by these members as they rock on i their axes. It is an important'desideratum incur structure to ell'ect co-action between the pairs'of pinch-instrumentalities, themselves, and then between them and the tucker, in a manner to insure smooth and accurate results. This is essential and yetis 'a difficult mechanical problem in a machine Preferably and as shown, each tuckermember is provided with means for facilitating the action of the tucker and, in this inl stance such means com rise a' uide 37' outstanding from the periphery of the memberand having a sheet engaging surface 38-adapted to lie alongsideof the sheets of paper as they are beingjtucked in bet een the pinch-members and guide the l-ea. ing ends of'the sheets. a

0pe r ation'. The operation of the machine in its entirety, and the functioning of the various instruinentalities thereof, as above described, will now be more or less obvious. Assuming that two or more webs or strips of paper, say, have passedfrom'thepaper rolls 38, 38*, and over the guider'rolls 39, 39, l and between the cutters, 40, 4O-which"are of the same general type as di'sclosedinour Letters-Patent No. 1,449,264, granted, arch on subject-inatterf ij tioned applicationia 20, 1923 on a divisional application based fier ileiinawsq4,eeesahe.

edqin join aforemem sheets are fed between the drums 2 subjected to the folding action, forth, during the cooperation of each of the tuckenmembers 32 with a set of pinch-menu bers 16, after which the two or more folded sheets are released from those pinch-members and'discharge out of the machine.

It will be observed that the rolls or rods of the pinch and tucker-members, 16 and 32, respectively, are of the same construction and that each is provided With an elongated slothence, these members may be economically produced as a unit of production.

From the foregoing, it will be perceived that we have devised an etiicient high-speed interl'tolding machine, of the rotary type, and adapted to cut, interfold and discharge interfolded sheets of paper, or the like, for towels, etc.

This disclosure, While directed to specific forms of mechanisms and instrumentalities, is predicated upon a cept; hence, it is not to be regarded as indicating possible limits of modification or variation, nor as fixing upon the annexed claims any restrictions which are not specified in those claims, themselves.

What We claim is:

1. An intertolding machine including a plurality of intergeared drums, driving means associated therewith for effecting rotatire movement of the drums in opposite directions, a plurality of sets of pinchmembers on each drum, a plurality of rocurately position it tatable tucker-members on each drum in alternate arrangement with respect to each set of pinch-members thereon, mechanism associated with and controlled by the driving means for rotating each tucker-member on its own axis and thereby maintain it in predetermined relation to the axis of the drum by which it is carried and thereby acin respect to the bightspace between a set of pinch-members on another of thedrums as that s t by rotation of the drum, brought into register with the tucker, and independent mechanism associated with and active on each set of pinch-members {or actuating the members of the set simultaneously and in respect to' each other.

2. An mter'folding machine 1ncluding a plurality of inter-geared drums, driving means a-sociated therewith l'or e'll'ecting rotative movement otthe drums in opposite directions a plurality oi sets of pinchmernbers on each drum, a plurality of rotatable tucker-members on each drum in alternate arrangement with respect to each set of pinch-members thereon, rotative mechanism associated with and controlled by the driving means for rotating each tuckermember on its own axis and thereby maintain it in predetermined relation to the axis of the drum by which it is carried and 3 and already set broad inventive-con directions, a plurality in reof drum tativc movement of the drums in opposite directions, a plurality of: sets of pinch-- members on each drum, a plurality of rotatable tucker-members on each drum in alternate arrangement 'with respect to each set of pinch-members thereon, mechanism comprising a toothed member intermeshed and associated with and controlled-by the driving means for rotating each tuckermember on its own axis andthereby main tain it in predetermined relation to the axis of the drum by which it is carried and therebycaccurately position it in respect to the bight-space betiveen a set of pinch-members that set is, by rotation of the drum, brought into register with the tucker, and independent mechanism associated with and active on each set of pinch-members ion; 'tuatand in respect to each other.

drum,

mechanism associated with and driring means associated thcrewith for eilecting roon another of the drums as.

4. An inter-folding machine including a plurality of intergeared drums, driving means associated therewith l" or eil'ecting rotati've movement of the drums in opposite directions, a plurality of sets of rotative pinchuncmbers on each drum, a plurality of rotatable tucker-members on each drum in alternate arral'igement with respect to each set ot'. pinch-members thereon, rotativc mechanism comprising a. toothedv mc1nber intermeshcd and associated with and controlled by the driving mcansglor rota".- ing cach tucker-member on its own axis and thereby maintain it in predetermined re lation to the axis of the drunrby which it is carried and thereby accurately position. .it in respect to the bight-space between a sct'oi pinch-members, on another or the and active on each set ot pinch-members for rotatively actuating the members of the set simultaneously and in respect to each. other.

5. An interfolding machine including a plurality of intcrgeared drums, driving means associated therewith for eiiecting rotative movement of the drums in opposite ofsets of rotatire inch-members 'on' each drum, a plurality of rotatable tucker-members on each drum in alternate arrangement withrespect to each setof pinch-members thereon, rotative-mechanism comprising a toothed member intermeshed andhssociatcd with and controlled by the driving means for rotat ing each tucker-member on its own axis and thereby maintain'it in predetermined relation to the axis of the drum by which with and vactive oneach set of pinchmembers for rotatively actuating the mem bers of the set simultaneously and in respect to each other, and comprising intermeshed pinions carried by the pinchmembers, a cam-device stationary relatively to'the drums, and a roller-carrying element carried by one of the pinions and coacting with the cam-device during rotation of the drum to operate both pinch-members.

16} An interfolding machine including a pairof intergeared drums, driving means associated therewith for efl'ecting relative rotation therebetween, a plurality of sets of pinch-members carried by each drum, a' plurality of rotatable tucker-members also carried by-each drum and in alternate arrangement with, t Sts 0f pinch'members thereon, mechanism controlledby the drivi'ng-meansior efi'ecting rotative movement of each tucker-member on its axis while the drum which carries it is rotating on its axis, and independent mechanism active on each set-of pinch-members on one drum for oscillatingthe members of the set relatively as at'ucker-member on the other drum is brought into tucking relation with that:

set. i I 7. An jinterfolding machine including a pair of mtergea'red drums, driving means associated therewith for effecting relative rotation therebetween, a. plurality of sets of pinch-members carried byeach ,drum, a plurality of rotatable tucker-members also car ried by' each drum andin alternate arrange: ment with the sets of pinch-members thereon,'rotatable mechanism controlled by the driving means for effecting rotative movement of each tucker-member on its axiswhile the drum which carries it is rotating on its axis, and independent mechanism active on each set of pinch-members on one drum for oscillating the members of the set relatively as a tucker-member on the other drum is brought into' tucking relation with that set.

8 An interfolding machine including a pair of intergeared drums, driving means associated therewith for eflec'ting relative rotation therebetween, a plurality of sets of pinch-members carried by each drum, a plus rality of rotatable tucker-members also car- 'i ried by each drum and in alternate rrrangement with the sets of pinch-members thereon, mechanism comprising a toothedmember intermeshed with and controlled by the driving means for eflecting rotative movement of 'each tucker-member'on its axis while the rotation therebetween, a plurality of sets of rotative pinch-members carried by each drum, a plurality of rotatable tucker-memhers also carried by each drum and in alternate arrangement with the sets of pinchmembers thereon, mechanism controlled by the driving-means for effecting rotativemovement of each tuckei me nber on its axis while the drum which carries/1t is rotating on its axis, and independent mechanism active on each set of pinch-members on one drum for oscillating the members of the set rotatively and relatively'as a tucker-member on the other drum is brought into tucking relation with that set.'

10. An interfolding machine including a pair of intergeared drums, driving means associated therewith for effecting relative rotation therebetw'een, a plurality of sets of rotative pinch-members carried by each drum, a plurality of rotatable tucker-members also carried by each drum and in alternate arrangement with the sets of pinchmefmbersthereon, mechanism controlled by the driving-means for. efiecting rotative movement of eachtucker-member on its axis while the drum which carries it is rotating on its axis, and independent mechanism active on each .setof pinch-meinbers on one drum for oscillating the members-of the'set rying crank-arm associatedwith one of the pin1ons,-and a cam-device stationary rela-."

tively to the drums andco-actin'g with the arm to effect rotative movementofone of the pinch-members and, thereby, similar movement but. in opposite'direction of the other pinch-member. I 1-1. An interfolding machine including a pair of intergeared drums, driving means associated therewith for effecting relative rotation therebetween, a piurality of sets of rotative pinch-members carried by each drum, a plurality 'of rotatable tucker-memhere also carried by each'drum and in altermembers,

nate arrangement with the sets of pinchmembers thereon, mechanism controlled by the driving-means for effecting rotative movement of each tucker-member on its axis while the drum which carries it is rotating on its axis, and independent mechanism active on each set of pinch-members on one drum for oscillatin the members of the set rotatively and relatlvely as a tucker-member on the other drum is brought into tucking relation with that set, said independent mechanism comprising intermeshed pinions on each set of pinch-members, a roller-car ing crank-arm associated with one of t e pinions, and a cam-device stationary relatively to the drums and co-acting with the arm to efiect rotative movement of one of the pinch-members and, thereby, similar movement but in opposite direction of the other pinch-member, a yieldable element outstanding from the periphery of one pinchmember, and a co-acting pinch-element on the companion pinch-member.

12. An interfolding machine including a pair of int'ergeared drums, driving means associated therewith for efiective relative rotation therebetween, a plurality of sets of rotative pinch-members carried by each drum, a plurality of rotatable tucker-members also carried by each drum and in alternate arrangement with the sets of pinch-members thereon, mechanism controlled by the driving-means for efi'ecting rotative movement 0 each tucker-member on its axis, and independent mechanism active on each set of pinch-members on one drum for oscillating the members of the set rota-tively and rela-' tively as a tucker-member on the other drum is brought into tucking relation with that set, said independent mechanism comprising int-ermesh'ed pinions on each set of pincha roller-carrying crank-arm associated with one of the pinions, and a camdevice stationary relatively to the drums and co-acting with the arm to effect rotative movement of one of the pinch-members,

and, thereby, similar movement but in opposite direction of the other pinch-member,

a yieldable element outstanding from the periphery of one pinch-member, and a coacting pinch-element on the companionpinch-member, paper uide.

13. n interfolding machine including a pair of associated rotatable drums, driving means therefor comprising, a gear on each drum in mesh with that on the companion drum, and a driving-gear meshed with one of the drum gears, a drive pinion at the end of each drum, sets of rotative pinchniembers carried by each drum, a pinion on each pinch-member intermeshed with that on its companion member, a crank'arm conneeted to one of the pinions, a plurality of cam-devices, one for but independent 0t and each tucker carrying a etlect rotative movement each drum, each set of pinch-members is actuatedat aand whereby the cranknrm for predetermined point 1n the rotatiomor'the v I meshed with the tuckenpinion and with the drum pinion; said driving means. effecting rotation of the drums in op osite directions to bring the respective tuc cit-members on one drum successively into tucking; relation with the respective pinchmembers on theother. drum; said idler-pinion operating to oi the respective tucker-memhers on their axes on one, drum in timed-relation to the rotation of that drum whereby the efiectiv'e ortionof each tuckenmember is maintaine in a, redetefr mined relation to the axis of t e other; drum; and said cam-devices operating to effect rotative, squeezing and' ,;releasin movements, successively, of each pair 0 pinch-members during and subsequent to" the tucking action of each tucker-member.

1.42. An intertolding machinei including a I means therefor comprising a gearaon'eac drum in mesh with that on the companion drum, and a driving-gear meshed with 'onea of theidrum gears, as' drive pinion at the end of each drum, sets ofrotative' inchmembers carried by each dru1n,-a pimon on each pinch-member intermeshediwith that on its companion member, acrank arm connectcd toone ofth'e pinions, a plurality of cam devices, one for but independent of each drum and whereby the crank arm for each set of pinch-members is actuated at a predetermined point in therotation of the drums to effect a rotative movement of pair of associated rotatable. drums, drivm i one of the pinch-members and, thereby, pro- 1 duce simultaneous movement oi the companion pinchmember in the opposite direction, a plurality of tucker-members on each drum in alternate arrangement with thepinch-members thereon, and a tucker-pinion ion each tucker-member, and an idler-pinion meshed with the tucker-pinion and with the' drum pinion; said driving means efi'ecting rotation of the drums in opposite directions to bring the respective members on none drum successivelyinto tucking relation with the respective pinch-members on: the other drum; said idler pinions operating to efiect rotat ve movement of the respective tuckermembers on their axes on one drumin timed.

by the effective portionof each'wtuckermember-is maintained in a predetermined elation to the axis of the ether drum;

and

relation to the rotation of that-drlum'where-fl I said cam-devicesoperating to effect rotative, squeez'lng'and releasing. movements,-' 4' n suceess vel- ,aof each pa1r of pinch-members during an"; ""siibsequent to the tucking action of each ck'e r member, and means fassoth the axisof one of thefidrums' ciate'd y p 7 for: adjusting then relatively.

n interfoldlfl'g achine including a d-ru pport, a pair of associated'rotatable drums,'- driving means therefor comprising a gear on each drum 'in mesh with that on companion drum, and a driving-gear I 'meshed'with one of the drum gears, a drive pinion at the end of each drum, sets of rothtive pinchamembers carried by each drum,

a pinion on'each pinch-member i'ntermes'hed with that on its companion member, a v. crank arm connected to one of the pinions,

a'pluralityofcam-devices in the drum support, one for but independent of each drum, and wherebythecrank-arm for each set of pinch-members is actuated at a JI'BdBtGl mined point in the rotation of the rums to efiect a rotative 3 movement of, one of the pinch-membe'rs and, thereby, produce simultaneous movement of the companion pinchmember in the opposite direction, a plurality of tucker-members on eachidrum' in alternate arrangemet with the pinch-members thereon, and a tucker-pinion on each tuckermember, and an idler-pinion meshed with the tucker-pinion and with the drum pin- "ion; said driving means efiect-ing rotation of the drums in opposite directions to hung the respective members on one drum suc- ,cessivelyinto tucking relation with the respective p1nchmembers on the other drum;

said idler pinions operating to effect rota-.. tive movement of the respective tuckermembers on their axes on one drum in timed relation to the rotation of that drum Where.

by the effective portion of each tucker-memher is maintainedin a predetermined relation to the axis of the other drum; and said cam-devices operating to effect rotation, squeezing and releasing movement, succcssively, of each pair of pinch-members during and subsequent to the tucking action of each tuckermember;

16. An interfolding machine including a pair of associatedrotatable drums, driving means therefor compris ng a gear on each drum in mesh with that-on the companion drum, and a driving-gear meshed'with one of the drum gears, 'a dr ve pinion at the end. of each drum, sets of rotative pinch-J members carried by each drum a pinion on each pinch-member intermeshed with that on its companion member, a crank-arm conneetedto one of the pinions, a plurality of cam-devices, one for but independent of each drnnnand whereby the crank-arm for each set of pinch-members is actuated at a predetermined point in the rotation of the drums to effect a rotative movement. of one of the pinch-members and, thereby, pro duce simultaneous movement of the companion' pinch-member in the opposite direction, a plurality of tucker-members on each drum in alternate arrangement with the pinch-members thereon, and a tucker-pinion on each tucker-member, and an idler-pinion meshed with the tucker-pinion and with the drum pinion; said driving means effecting termined relation to the axis of the otherdrum; and said cam-devices operating to' effect rotative, squeezing and releasing.

movements, successively, of each pair of pinch-members during and subsequent v to the tuckingsaction of each tucker-member, and means for supplying a plurality of strips of' pro-cut material between the drums for an interfolding action thereof by the tucker and pinch-members.

In testimony whereof we afiix our signa ture r VILLIAM I? CANNARD, GLENN" A. SHAFFER. 

